Register lock



March 11, 1930. J. v. PETRELLI REGISTER LOCK Filed Feb. 18, 1928Patented Mar. 11, 1930 1,749,778

UNITED STATES PATENT OFFICE JOSEPH V. PETIRELLI, OF NEW ROCHELLE, NEWYORK REGISTER LOCK Application filed February 18, 1928. Serial No.255,217.

This invention relates to ventilators of the so as to be rotatable foropening or closing type having movable shutters controlling a theopening 13 and the passage to which it heating conduit for example, andhas for its is connected, As shown in Fig. 2 these shutobject to providemeans for maintaining ters rotate in a clockwise direction to close 5said shutters in adjusted position so that they and in a reversedirection to open. 55

will not become accidentally moved by ja Each shutter 14 has aprojection 16 conor otherwise to a different position from nectedthere-with at one end and of the shape what is desired. Another objectis to proillustrated, extending into the housin and vide a simple,inexpensive, yet reliable and provided with an arcuate slot 17 in eaclisuch easily adjustable means for accomplishing projection. A slidableactuating member 18 60 this purpose quickly. In hot air ventilat f isprovided with pins 19 fitted within the slots designed 01 llOllSGllOlCl1158, 01 instance, ll? 17 so that on translation .of the member 18 inhas been customary to have a grat ng 11th one direction the shutters areclosed and on ventilator snutters mounted behind them its movement inthe opposite direction they and an actuating handle of some sort proard, As Shown i Fi 4 thi lid bl 65 jecting through the grating forcontrolling actuating member 18 is located along one side the shutters.These have been purposely of the housing 12. made easily movable inorder to avoid stick- Projecting forwardly from the member 18 i g s faras possible with the result th is an extension 20 of the shape shown inFigs.

0 they frequently slip from the position ln- 2 to 4 inclusive andprovided with a bent- 7o tended. over end portion 21 extending throughthe According to this invention there is pr0- l ated opening in thegrating so that vided a grating behind which is mounted one the shuttersmay be actuated from the opor more shutters controlling the passage 0iposite side of the grating. As shown in Figs.

25 fluid through the grating, and means is pr 8 and 4 the extension 20is provided with a 75 ided for actuating the shutters fr m theperforation 22 in one side through which a front side of the grating,whlch means is also nut 26 may project. Extending over the top providedwith a locking mechanism for said f th b t ti 21 i a k 23 actuatingmeans and shutters to hold them in Shown i Fi 5 as id d ith d d dadjusted position. Specifically this locking portlong 2.1 f th S126 tfit i th l i dp 80 means includes a threaded member arranged l Opening25 h ld 28 h d t to clamp the actuating means to the sldes 0t gage th tf th id f th Opening as an elongated slot in the grating. shown in Figs.3 and 4. The nut 26 is pro- Reit'erring to the drawings: vided with areduced end 27 which is shaped Fig. 1 is a plan View of the ventilatorof to enter the opening 22. A screw threaded 35 this invention showing agrating. member 29 passes through the yoke 23, bent- Fig. 2 is a sectionon the line 22 of Fig. 1. over end portion 21, and engages the nut 26Fig. 3 is a section on the line 33 of 1. as shown in Fig. 4. When thisthreaded Fig. 4 is asection on the line 4-4 of Fig. 1. member istightened the nut is clamped Fig. 5 is a detail of the yoke memberformagainst the under-sides of the strip forming 90 ing apart of thelocking mechanism. the opening 25 while the head 30 of the Fig. 6 is adetail of the nut also forming a threaded member clamps the yoke firmlyin part of the locking mechanism. position and locks the extension 20against The grating 10 is preferably a stamping shifting. The head 30 ofthis threaded memsecured to the housing 12 by screws 11. Beber 29 ispreferably provided with opposite hind the grating the housing isprovided with slots 31 as shown in Fig. 1 so that a key 32 alargeopening 13 of nearly the same dimenwill fit into the slots and beadapted for sions as the grating opening and substantialturning thethreaded member to loosen or 1y coaxial therewith. A number of shutterstighten the clamp. Instead of having the 14 are pivoted at 15 to thehousing side Walls nut engage the inside of the grating a wear- .0

strip 33 is capable of being raised slightly from the grating ifnecessary.

I claim: 7

1. The combination with a grating, .of a housing on one side of andconnected to said grating, and provided with an opening substantiallycoaxial with said grating, shutters pivotally mounted to said housingand controlling the passage of gas through said grating, slidable meansfor actuating said shutters from the side ofsaid grating opposite theshutters, the grating having an elongated opening through which saidactuating means projects, and threaded means carried by said actuatingmeans for cooperation with the sides of said elongated opening forclamping said actuating mechanism in adjusted position, said threadedmeans comprising a nut non-rotatably mounted for cooperation with thesides of said elongated opening on one side, a headed bolt in threadedengagement with said nut, and also cooperating with said slidable means,and a washer member beneath the bolt head and shaped to 35 enclose theprojecting end of said actuating means and fit into said elongatedopening and also engage its sides opposite the nut in' such manner thattightening the bolt clamps said washer member and nut-against nals atone end of the several shutters, said arms being extended beyond thejournals and provided with slots extending longitudinally of the arms, areciprocable bar having pins bar is reciprocated, a bracket having oneprojecting into said slots to rock the shutters between shut and openpositions as the end fixed to said bar, a slotted guide on said gratingthrough which the other end of said bracket extends, a flange on saidhousing beneath the grating and having a slot registering with the slotof said guide, a plate between said guide and flange and carrying saidbracket, and means above the plate for moving the same whereby to movesaid bar.

3. The combination with a grating of a housing extending around theperiphery of said grating on one side thereof, a series of shutters forclosing the openlng in said housing and each having journals at its endspivoted in the sides of said housing, said shutters having arms carryingthe journals at one end of the several shutters, said arms beingextended beyond the journals and provided with slots extendinglongitudinally of the arms, a reciprocable bar having pins projectinginto said slots to rock the shutters 7 between shut and open positionsas the bar is reciprocated, a bracket having one end fixed to said bar,a slotted guide on said grating through which the other end of said asaid plate against the underside of said guide w and thereby secure theplate in adjusted position. 7

In testimony whereof I ailix my signa-' ture. l JOSEPH PETRELLI.

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